I have a cute pair of Earth shoes by Kalso. The Earth Shoe was the original negative heel shoe, first developed in Denmark in the late 50′ by Anna Kalsø. The shoe was released in the USA in 1970, becoming a popular countercultural symbol of the 70’s. These are is excellent vintage condition. They are suede and leather and an elastic band. Slip ons. Such a cute pair of the original earth shoes! Thank you for looking and happy shopping!